klugh



P. B. KLUGH.

AUTOMATIC MUSICAL INSTRUMENT.

APPLICATION FILED APR. 3. l9l6.

m 5 n wm w 7 m mm W m m W N| M x Q\. 3 %Q I MW 5 S W L B 1 P. B. KLUGH.

AUTOMATIC MUSICAL INSTRUMENT.

APPLICATION FILED APR.3. I916.

Patented Dec. 9,1919.

E S- T wmhses W U I ED STATES PATENT OFFICE.

PAUL B. KIiUGI-I, OF CHICAGO, ILLINOIS, ASSIGNOR T0 THE CABLE COMPANY, OF

. CHICAGG, IIILINQIS, A CORPORATION OF ILLINOIS.

To all whom it may concern:

Be it known that I, PAUL B. KLUGH, a

citizen of the; United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Automatic Musical Instruments, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawing, forming a part of this specification. My invention relates to automatic musical instruments, and, more specifically, to an instrument having a motor for causing the travel of the music-roll or note-sheet, andanother motor for operating a device for inducing air-tension.

In'an instrument of this type, if the two motors were provided with independent controllers, it might happen that the operator would stop the sheet-propelling motor but would forgetto stop the air tension-motor. One of the objects of my invention isl-to provide such an instrument with an i1nproved safety-device whereby, when the controller for the sheet-propelling motor is placed in position to StOp this motor, the

-other motor will also be stopped. Furthermatic..

more, in playing a selection, it is sometimes desirable to stop the sheet-propelling motor for a short time and then start it up again.

A further object of my invention is to provide an improved device whereby the sheet-propelling motor may be stopped for a short time without interfering with the operation of the air-tension motor, but, whereby, it the sheet-propelling motor is stopped for a considerable length of time, the air-tension motor will also be stopped.

In the drawings, in which one embodiment of my invention is shown- Figure 1 is a front view of a player-piano,

parts being broken away to show the interior construction; 7 1

Fig; 2 is a bottom view of the key-bed and associated parts;

Fig. 3 is a section, on; the line 33. of Fig. 2, showing thepneumatic for actuating the switch; and

Fig. 4: is a section, showing the valve-action which. controls the slow-acting pneu- Referring now to the drawings in detail, the playere'piano 10 shown may be provided with any usual or suitable piano action, and

' pneumat c acti n and with a y suitab e yp Specification of Letters Patent.

Application filed April 3,

Patented Dec. 9, 1919.

1916. Serial No. 88,676.

of. air-motor 11 for causing the music-roll or note-sheet to travel over the tracker. It is also provided with an air-pump 12 for exhausting the air from the pneumatic action and from the air-motor 11.

This air-pump 12 is driven by an electric motor 13 by means of a belt 14. The electric'motor 13 is supplied with current by means of the leading-in wires 15 and 16.

A switch 17 of any usual or suitable type, is associated with the leading-in wires 16 to make or break the circuit to start or stop the motor.

For controlling the speed of the air-motor 1.1, a tempo-lever 18, of any usual or suitable type, is provided, to which the rods 18 and 18 are pivoted. The rod 18 is connected with the usual tempo-valve (not shown), which operates in the valve-box 18 to con trol the flow of air in the conduit 1S lead ing from the air-motor 11. Therod 18 is connected with the usual tempo-indicator (not shown). I

In order to insure that the electric motor 13 will be stopped when the tempo-lever 18 is held, for any length of time, in a position in which it will cause the air-motor 11 to stop, a delayed-action, motor cut-out mechanism is provided, comprising a pneumatic 19 for actuating the switch 17, a valve-action 20 for controlling the pneumatic 19, a spring-valve 21 for controlling the valveaction 20, a slow-actin pneumatic 22 for operating the valve 21, a valve-action 23 for controlling the slow-acting pneumatic 22. a spring-valve 24 for controlling the valve-action 28, a push-rod 25 for actuating the valve 24, and the rod 18" pivotally connected to the tempo-lever 18 for actuating the push-rod 25.

A stop 26 is provided for the tempo-lever 18, located so that, when the tempo-lever engages it, the tempo-valves will be in position to cause the air-motor 11 to stop.

For starting the motor 13, the switch 17 is connected to a push-rod 27, which is located in a position to be engaged and actuated by a push-rod 28. which is pivotally connected to the tempo-lever 1S.

The pneumatic 19 for stopping the motor has, secured to its movable leaf,'a bent arm 29 having a fork 30, which engages the down-turned end 31 of the rod 27. The pneumatic is also provided with a spring 39, which hol s the f r in eng gement with the down-turned end 31 to prevent lost motion and rattling.

The valve'action 20 may be of any usual or suitable type. It is connected with the pneumatic 19 by means of the conduit 33, and with the air-pump 12 by means of the conduit 34.

When the valve 21 is opened, air is admitted, through the tube 35, to operate the valve-action 20 to cause the pneumatic 19 to collapse.

The interior of the pneumatic 22 is connected with the valve-action 23 by means of a conduit 36, which can be placed in communication with either exhaust or atmosphere by means of a valve 37 hen the spring-valve 24 is opened, air is admitted, through a tube 38, to cause the valve 37 tobe raised to place the tube 36 in communication with the exhaust, to cause the pneumatic 22 to collapse.

This pneumatic 22 is provided with a bent finger 38", which engages the spring-valve 21 to open it as the pneumatic collapses.

The rod 25 is provided with a push-button or cam-member 39, which is located in a position to be engaged by the down-turned end 40 of the rod 26.

The flow of air through the tube 36 may be restricted by means of a perforated disk or bleed '41.

The air-pump 12 is connected with the windchest of the player-piano through the conduits 42, 43, 44 and 45.

The operation of the device is as follows:

To start the motor 13, the tempo-lever 18 is moved to a position in which the rod 28 will engage the end of the rod 27 and close the switch 17. The tempo-lever may then be used to control the speed of the notesheet in the usual manner.

If the tempo-lever 18 is moved to a position in which it engages the stop 26", the air-motor 11 will be cut off, and the downturned end 40 of the rod 18 will engage the push-button 39 of the push-rod 25, causing the push-rod 25 to open the springvalve 24. When the spring-valve 24 is opened, air is admitted through the tube 38, causing the valve 37 to rise to cutofi the tube 36 from atmosphere and connect it with the exhaust.

The slow-acting pneumatic 22 will then be exhausted slowly through the tube 36.

As the pneumatic 22 approaches a completely collapsed position, the finger 38 engages the spring-valve 21. The opening of the spring-valve 21 admits air through the tube 35 to the valve-action 20, causing the pneumatic 19 to be exhausted through the conduits 33 and 34. As the pneumatic 19 collapses, the arm 30 engages the downturned end 32 of the rod 27 and opens the switch to stop the motor 13.

After the slow-acting pneumatic 22 begins to collapse, a considerable time elapses before the finger 38 engages the valve 21 to open it.

By reason of this construction, the tempolever 18 can be moved to a position to stop the air-motor 11 for a short time without causing the electric motor 13 to stop, that, in playing a selection, a pause can' made in the travel of the note-sheet without cutting out the motor 13, but, if the tempo-lever is held in this position for any considerable length of time, the motor 13 will be cut out. Thus, there is no danger that the pump or air-tension motor will be left running for any length of time after the air-motor is cut off.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. An automatic note-sheet-controlled musical instrument comprising a motor for causing the travel of the note-sheet, a device for controlling said motor movable to 9. ppsition in which it will cause said motor'to stop, a second motor, means operated by said second motor for producing air-tension for use in said instrument, other means whereby the movement of said controlling device to said position will cause said 85- ond motor to stop, and means operable in} dependently of said other means for controlling said second motor. c

2. An automatic note-sheet-controlled niftsical instrument comprising a motor for causing the travel of the note-sheet, a device for controlling said motor movable, 1b a position in which it will cause said to stop, a second motor, means operatedlfy said second motor for producing air-tension for use in said instrument, and delayed-aetion means whereby the movement of said controlling device to said position will said second motor to stop.

3. An automatic note-sheet-controllediml isical instrument comprising a motor causing the travel of the note-sheet, addvice for controlling said motor movable tun position in which it will cause said mdtxir to stop, a second motor, means operated by said second motor for producing air-tension for use in said instrument, and delayed-action means, comprising a slow-acting pneiimatic, whereby the movement of sald controlling device to said position will cause said second motor to stop. 4. An automatic note-sheet-controlled musical instrument comprising a motor for causing the travel of the note-sheet, a device for controlling said motor movable to $120- sition in which it will cause said motor to' stop, an electric motor, means operated said electric motor for producing air-tension for use in said instrument, other means whereby the movement of said controlling device to said position will cause said as its tric motor to stop, and means operable independently of said other means for controlling said electric motor.

5. An automatic note-sheet-controlled musical instrument comprising a motor for causing the travel of the note-sheet, a device for controlling said motor movable to a position in" which it will cause said motor to stop, an electric motor, means operated by said electric motor for producing air-tension for use in said instrument, and means whereby the movement of said controlling device to said position will cause said electric motor to stop, comprising an electric switch in the circuit of said motor, and a pneumatic actuator for operating said switch.

6. An automatic note-sheet-controlled musical instrument comprising a motor for causing the travel of the note-sheet, a device for controlling said motor movable to a position in which it will cause said motor to stop, an electric motor, means operated by said electric motor for producing air-tension for use in said instrument, and means whereby the movement of said controlling device to said position will cause said electric motor to stop, comprising an electric switch in the circuit of said motor, a pneumatic for actuating said switch, a valve controlling said pneumatic, and a slow-acting pneumatic controlling said valve.

'7. An automatic note-sheet-controlled musical instrument comprising a motor for causing the travel of the note-sheet, a device for controlling said motor movable to a position in which it will cause said motor to stop, an electric motor, means operated by said electric motor for producing air-tension for use in said instrument, and means whereby the movement of said controlling device to said position will cause said electric motor to stop, comprising an electric switch 111 the circuit of said motor, a pneumatic for actuating sald switch, a valve controlling said pneumatic, a slow-acting pneumatic controlling said valve, a valve controlling the operation of said slow-acting pneumatic, and means whereby the movement of said controlling device to said position will cause said last valve to be operated.

8. An automatic note-sheet-controlled musical instrument comprising a motor for causing the travel of the note-sheet, a device if r controlling said motormovable to a position in which it will cause said motor to stop, an electric motor, means operated by said electric motor for producing air-tension for use in said instrument, means whereby the movement of said controlling device to said position will cause said electric motor to stop, comprising an electric switch in the circuit of said motor, and a time-controlled actuator for operating said switch.

9. An automatic note-sheet-controlled musical instrument comprising a motor for causing the travel of the note-sheet, a device for controlling said motor movable manually to a position in which it will cause said motor to stop, a second motor, means operated by said second motor for producing air-tension for use in said instrument, and means whereby the movement of said manually movable device to said position will cause said second motor to stop.

In witness whereof, I have hereunto subscribed my name in the presence of two witnesses.

PAUL B. KLUGH.

Witnesses:

A. SWENsEN, J. CLARKE HOGEY. 

